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What's the problem? Only the fuse in the amp is blowing, not the fuse in the power cable. The power light on the amp goes on..then fades out..and the fuse pops.

What can this be? Any help? Thank you.

Check the connections at the amp. Be sure there are no stray strands of wire. Use a DMM and check the resistance at the amps speaker connections. It is possible a speaker wire may have come loose in shipping and shorting the outputs. And again be sure you have proper polarity on your power inputs.

__________________"Acoustics is the study of sound; a branch of physics dealing with sound. The law of physics is constantly challenge. Therefore in relation to acoustics; You must study constantly, for you will be constantly challenged." ...... Rainmanspl

Check the connections at the amp. Be sure there are no stray strands of wire. Use a DMM and check the resistance at the amps speaker connections. It is possible a speaker wire may have come loose in shipping and shorting the outputs. And again be sure you have proper polarity on your power inputs.

If I'm not mistaken, the DMM should read 1.8ohms at the amps speaker output. As for polarity, + to + and - to -. Make sure the power lead from the battery is on the + terminal of the amp and not on the - (ground) terminal.

__________________"Acoustics is the study of sound; a branch of physics dealing with sound. The law of physics is constantly challenge. Therefore in relation to acoustics; You must study constantly, for you will be constantly challenged." ...... Rainmanspl

Is it possible for you to borrow a buddy's amp? You can hook it up to your existing wiring to rule out a bad amp. The downside however, is if there's an installation error, you could damage your buddy's amp.

Also, you could try hooking up one woofer at a time. If the amp plays one woofer fine and then you hook up the second one and it shuts off, you have a bad woofer.